Nagakata nishi and nagasumi nishi



NAGAKATA NISHI AND NAGASUMI NISHI. THERMAL CIRCUIT CONTROLLER.

APPLICATION HLEU IULYS, \9\9. 1,377,848. Patented May 10,1921. 2 SHEES--SMEET l.

NAGAKATA NlSHI AND NAGASUMI NISHI. WERMAL clncux CUNTRULLER.

APPLICATION HLU )WJ/5,1919. 1,377,848. Patented May 10, 1921.

2 SHEETS-SHEE 2.

.. ourfiny'ention. pi

. rige clips.

1 ofv flat heating coils Ventron HBe it known'u that We,

,5. If`1g lGis a ttorn Aplangonf the iron heatingelement.A A

t. fig', a ment.

top 'piatti the im; heating sie-' fis a .side view partly incross-section of the'iinit `shown :in Fig. 5.- Fig. 9's `a fragmentary'section taken on line 9-9 oihFi'g.3.`

Fig. 10 is aplan of one of the connecting In the drawings 1A indicates the base of an electriciron ormed'with a lower ironing surface 2. A pairof upstanding studs 3 and 4 arescrewed into the top of the base 1 on the central axis thereof. On the top of the base rests a plate of mica 5the studs 3 and 4 extendingr through apertures 6 and 7 in said pieter On saidniica plate rests a heating element 10 which includes a. pair y1 1 and 12 wound on mica plates 13 and 14, a plate of mica 15 covering said heating coils, and a pair of metal conductor lates 16 and'17 resting on platel direc, y over said heating coils;

i 5 the studs 3 and 4 projectingl through apertures 18 and ;19 in'plate 15 4and between the the plate and 12 andbetween the plates 16 and :171 The heating coils 11 and 12 .end plates 16 and 17 are secured upon 15 by rivets 20 and21, the rivet heating `coils -11 v J t THERMAL Incom-CONTROLLER.

iran s'rATesr-AraNr orrlcs.

: A Spe:zii-'reatiiii of Letters I eoiiolding' thejheanng e011 11 end plate 1e to' "the platefl, andthe' riifet 21 holdinl'gA "'1 heatingcoil 13 and platel to plate15.

plate 23 of mica rests upon plates 16 and lf' of the heating eleliielzd3'10,v the studs 3 and' 4 'extending through 'apertures' -24l and 25 the`plates.; 'Afthick metal'plate261- i i provided 'with' aperturesi 27 "and upon the mica plate the'studsr'2and3 extending through said aperturesj4` VNuts 29 and 30'sc'riws'r on the upper'endsj o fthe stud bases against the top plate26 'and clamp the heatingV element 10 and mica plates ,5 -and 23 between the plate 26 and base 1. The upperf'portions of thestUds 3 and4 are tions 'of the studs '3` and4 against the'top'- off 'the cover 35 and clamp said-'cover-in' and over the parts' position on the base 1 as described. A handle bracket 40 provided with apertures 41 and 42 rests upon lnuts 28 `rests 38 and 439, the studs 3 and 4 projectingi through said apertures, and nuts 43 and 44 screw on the endsof said studs against the bracket and clamp the bracket in position. A handle v45 is secured to the upper ends of bracket 40.

A stud 50 of copper or other suitable material ofthe proper coefficient of expansion, heat conductivity, melting point and specific heat, is welded or otherwise secured to lthe top of the'base 1 at' the rear thereof and projects upwardly into a recess 51 formed in the upper rear part of cover 35 through :en opening 52 at the bottom of said recess in said cover. A unitary member 55 of my circuit controller, including a base 56 and studs 57 and 58p, is secured to the top of the hase 1 at the rear thereof by means of screws .79 extending. through apertures 60 in hase 5G and screwing into base 1, a spring washer 61 and a washer 62 being interposed .between the base 56 and the head of each of said screws. The hase 56 is curved rearwardly between the studs 57 and 58 to fit rearwardly around the stud 5 0 so that the studs 57 and 58 stand up respectively at the sides of stud 50 through opening 52 and recess 51. The base 56 and the studs 5? and 58 are made of porcelain or other ing material whichis pivoted to,l said"ears by a pivot 69. clip' 70 ts'over the top of the stud 58. i's' H-Shaped, comprising vertical front ,and rear Vizv'alls and an intermediate wiallff extending horizonf tally between and connecting fsaid :vertical walls. vThe vertical 4Walls '.714l below the wall 72 fit'overthe front and rear sideso'f vstud 58 andzrest uponshouldersA 73 insaid stud, While theavall 72rests upon the top' of'the stud. The clip 70 is detachablysecured to the stud 58 by a bolt 74 extending through walls 71 and the stud and a nut 75 screwing on the endpf saidjbblt against vone of the `Walls 7 1. Theswinging end of arm 68 f swinV shet'ween the upper,portionof Walls 71. nV the top oflcap 63 is formedasocket 7 6. Oh theuppnfface of wall 72 of vclip 70 is a .contact 79.4ada'pted to be engaged by a Contact onfthe-bottom of the i swinging` end .cf arlngS.' The Vcontact 80 is forme on the xhead of "a 'screw 81 extending through the bottom of arm 68 and screwing into a contact`82 in the bottom of a socket, 83rformed in Vthe top of the swinging-.end vof the arm 68. A. threaded shank 85jextends vertically from the top of stud 5 0, and an internally threaded sleeve SG screws on said stud. The sleeve 8G is also externally threaded and an internally threaded ca .8 7. screws on thesleeve 86. The cap 87 liasa conical top 88 forengaging the under side of arm 68. A stud 90 projects radially from the lower edge of sleeve.86, onwhich stud an indicator 91 telescopes. A plate 95 is secured to the rear end of icover 35 by screws 95 from the upper end of which plates a dial 9G eX- tends rearwardly in a horizontal direction. The plate 95 is provided with ahorizontal slot 97 and the dial 90 is provided with an arcuate slot 98 concentric with the axis of the sleeve 86, through which slots extends the indicator 91, pointing to a scale 100 on the dial 96.

The scale 100 is a novel feature of our invention. The extreme right of slot 98 is marked Ofi', to which Vthe indicator 91 points ,to indicate that the electric current assing. through the iron is-turned ofi". glightly to the left of character Off is a mark denoted On, to which the indicator 91 points to indicate that the current at this point is turned on. To the left of character 'On are marks 101, 102, 103, 104 and 105 4and between said marks -are intermediate graduating marks 106. The marks 101, 103 fandl-lOf-exten'd "rearwardly beyond marks 106 and are connected With an arc 107 described from the center of sleeve 86.l The lines 102 and 104 extend rearwardly beyond the arc 107 andare' connected by an arc 108 described alsoufromthe center ofsleevel 86,., flfhe intersections of "the arc`1'07 and marks', ]01', 4103, and 105, and the intersections o'f th'e i marks 102'ai1d 104 heat, silkimay be iron'edwith the ir'omand atthe 'highest-p'oint mark 103, jof'said zone,

tlelcurrentfo the irQn-yvhentheironreaches' a temperature corresponding to said `mark to'mark 104, which areiiucls'ed by tl'iearc 10S, determines a heat zone1 indicated,Wdl Within which zone, wool may be ironed,ar`d atthe 4liighestfjiolitof saidzon'e, namely mark 1 04,.the currentwhen their'onieaches a temperature curespondinfrv to 'said -mark wiiriie automatically -iurieda; if'isiie dicator points to said mark, to prevent burning ofthe Wool, .The graduations from' mark 103 to mark1'05,`which 'are inclosed by thel lejft portion of are 107, determine fa heatzone denoted, 'lCotton, Within which zone, cotton may be ironed, and at the highest point ofsaid Zone, lnamely, mark 105, the current when the iron reaches a temperatur'e"corresponding to said mark Will be automatically turned off, if thc indicator pointsto said mark, to prevent' burning of the cotton. The Word Low is marked on the scale to theleft of the, character On, which indicates, when the indicator is opposite it, that the current and heat of the iron'are low. The Word AHigh is marked `on the scale opposite the mark 105, which indicates, when the indicator points to it, that the current and heat of theiron are high.

A block of insulation 110, formed with a recess 111 extending from the bottom thereof, restsin the iron cover recess 51 against the back of handle bracket 40 and-against the plate 95, over the unit 55, the stud 50 and the parts mounted thereon, said unit, stud and parts projecting in said recess. Recesses 112 and 113 and ,conduits 114, 115, 116 and 117 are also formed in the block 110, theconduits leading from the recesses 112 and 113 respectively into the recess 111, and the conduits 115 and 116 leading respectively fr'om recesses 112 and 113 out through the top of said block. in the recesses 112 and 113 respectively,

n are premi` ne'n'tly indicated." The 'graduations from l mark :101 tomark 103, which are V4inc'los'elf'lj byj a lzo'rtion';l of arc"10j7, determine' 'a heat Z'Oiie indicated, sini, `-within whichi'zne or Clips 118 and 119 fit and'extend through conduits 114 and 115 refl spectively. Contacts 125 and 126 are- :'respe'cf tively secured to theY lower ends ofspringsV of lleads 127 and128 aregarespectivelyrconected at 4their ends to thefscrewsa3122 of.

' clips i118 ,and 119 respectively and: extend through --conduits 115 and i116 respectively. The block 110 is made :in ytivolsectionspa front section :130 .and a rear section. 131, part o' the recesses111,;112 and 1113 and the .-ormed in section 130 and the other 'part {saidiref cesses and conduits .being formed in section 131.1151 housing 135 itsfoverlrthe top ,cf block; 110, AI bolt =136 extends through, the

rear wallfofhousing 135,:blcck sectionsgll frontwall ofsaidhousingfand rear and 130, member ofhandle. bracket 440,and a n1it137 screws onY theendroit saidboltagaist said bracket whereby the bloclr110.,.is.detach` 1 ably secured onthe rear of; the iron inlcover recess 51. The lower edge .of the-iearywall of the body section 131 formedawith -a notch '140 Vthrough which .-.the indicator, 91 extends.v The upper .wall 'ofgthe housing 135 is .formed with an aperture :141.through which the leads 4127 and 128 extend twisted together. The lower side edges o-the hous-l ing `135is formed with flanges 142-throu h which extend screws. 143 screwing. into te iron cover35,thus firmly securing the block 110 on the iron. The upperend of the rear memberV of bracket 40:,has a rear extension 145 extending rearwardly at a slight downward inclination and .then downwardly.-

The upper part of said extension has an aperture 1464 through which extend the twisted leads 127 and 128. Said leads are clamped to the lower end of extension 145 by a clamp 147 which comprises a clip 148 and a bolt 149 and nut 150, said bolt extending through the lower end of the extension 145, between the wires 127 and through said clip, and said nut screwing on the end of said :bolt against said'clip and drawing said clip against said extension and said wires. A .spring'155 surrounds the wires 127 and 128 above the extension 145 and rests at its lower end upon said extension, said spring preventing breaking of said wires. A wire 160, connected at one end to the bolt 65 and gripped a ainst the cap 63 by a nut 66, extends ownward through an eye 161, cast on.the lower front part of stud 57, and is connected at its other end to a lug terminal 162, upstanding from the rear end of plate 16, by

means. csa screw 163.-. A wire 170 vis connected ati one. end .to clip by bolt 7.4` and lnut 75 and at its` otherV end to alug terminal-171by means of; a screw-172.. Byameanscf nuts: 66iand75 onqscrews 1651 cr 172 geur circuit controller; is' readily. conectedeoridisconnected from the iron. The rerends of coilsal and 125-extend through the mica p1ate,-.l53 fandreonnect .to-plates 16 andnl?, near =termin'als;162:` and A1163;-, i The coilsn 11 and *a 12. f connect at:,`ftheir" iorward ends. 2.3.1.5? i .Thefoperation .ofo

lowc' .=1.=;-; zum' no 5:12,-- -v y-.rire .-The indicator 91is swim @untilit points, to'therdegreeiof-rheat;ont e scale 100. at which it is desired toi .shut oft the; current of thai-iron:automaticallyandjhe sleeve 86. moved -upiorf doiwn on the` threaded shank 85.- to setthe-.pointgoi the, cap .87; the-gproper fromthe farm 685: thei'heatoi the iron -risesl iinderjthe; iniiuencecf the cur rentpassing tllrilgh Vthe coils `11' and 12, the stud :5 0.- ex andsupwardly until thel predeterrn'ined1L egree ofheatisieached iivhere -L upon' thapont cficapgffengages .Swings arm 68, u wardly.;Qn; tS1mY11-9,and engages, tlxiey .contatff'ifdai land sbreak thesnon: cimuit,l.thus preventing` the iron from burningmhergcodsnwhch ita-3 ironing. The.. iron .than coolswdthap -87 end alm 68 .edescendrwith the. contraction of stud- 550 until .thafoontacti 80 again'engages; Contact 7 9,1. and'.t retablishe s thecircuit .and heat of 4thegiron. [[he= locationof-;the-, stud 50 is such-that thpoint. `ofthe-cap 87 .en ages the arm- 6 8 closctb, ,theipiyoti69 -thereo whereby -the contacts 8O -movesquiclrlynnd at; a. considerable distance away..from -the contact 79, orx quickly? intocngagement with.- said contact underfthe inluenceof aislght upward ordownwardmovement of the cap 87 asthefstud 50 expands or contracts according to the =heat ofthe iron,' thus preventing arcing and burning of the,contact's.

Our circuit controller may be readil assembled upon the iron ortaken apart t erefrom.v By removing the bolt 136 and screws 143 the block 110 and the parts therein may be lifted out ofthe cover recess 51, the contacts 125 and 126 slipping out of the sockets 76 and 83. The unit 55 ma be readily re` moved from the iron throng cover opening 52 upon unscrewing screws 59. The plate 95, dial 96 and indicator 91- may be readily removedffrom the iron by..unscrewing screws 95', the indicator slipping off the stud 90. By turning the cap 87, said cap may be adjusted to function perfectly in accordance with the indicator 91 and scale 100.

Having described our invention we claim:

1. In a thermal circuit controller, a base, an expansible and contractible stud mounted on said base, a threaded shank on said stud, a threaded sleeve screwing on inventionis as ich.. 

